The Significance of the Discordant Occurrence of Lens Tumors in Humans versus Other Species.

Purpose: The purpose of this study was to determine in which species and under what conditions lens tumors occur.

Design: A review of databases of available human and veterinary ocular pathologic material and the previously reported literature.

Participants: Approximately 18 000 patients who had ocular surgical specimens submitted and studied at the University of Wisconsin School of Medicine and Public Health between 1920 and 2014 and 45 000 ocular veterinary cases from the Comparative Ocular Pathology Laboratory of Wisconsin between 1983 and 2014.

Targeted photocoagulation of peripheral ischemia to treat rebound edema.

Introduction: Peripheral retinal ischemia not detectable by conventional fluorescein angiography has been proposed to be a driving force for rebound edema in retinal vein occlusions. In this report, we examine the treatment of peripheral retinal ischemia with targeted retinal photocoagulation (TRP) to manage a patient's rebound edema.

Methods: To assess the extent of peripheral nonperfusion, an Optos 200Tx device was used.